摘要
利用日本海域内完成的多条地震测深剖面及其它地球物理资料,综合分析该域地壳结构特点以及Benioff带特点.日本海域地壳结构具有陆壳、洋壳区别和两分、三分两类;Benioff带在不同方向上具有不同倾角,延伸深度差别较大;日本海开裂的动力源自太平洋板块西向俯冲所产生的多期挤压和引张应力场.
Utilizing the multiple profiles from seismic sounding and other geophysical data completed in the domain of Japan Sea, the paper synthetically analyzes the characteristics of crustal structure and Benioff zone in the domain. The crustal structure of the domain of Japan Sea takes on the differences between continental crust and oceanic crust and two types of dichotomy and trisection. The Benioff zones have different dip in different directions and their extended depths have greater differences. The drive of Japan Sea's opening comes from multiple compression and extension stress field produced by the westword subduction of the Pacific plate.
出处
《地球物理学进展》
CSCD
2004年第1期56-60,共5页
Progress in Geophysics
关键词
日本海域
地震测深剖面
地壳结构
Benioff带
日本海开裂
domain of Japan Sea, profile from seismic sounding, crustal structure, benioff zone, Japan Sea's opening
